dodson



2 Sheets-Sheet 1.

S. DODSON.

GRAIN DEGORTIGATOR. V N0. 277,998. Patented May 22,1883.

j] I I I l I I jada M45712 as W672i 7.

2 Sheets-Sheet 2.

S. DODSON.

GRAIN DEGORTIGATOR.

Patented May 22,1883.

UNITED STATES ATENT OFFICE.

SILAS DODSON, OF ROCHESTER, YORK.

G RAIN-DECO RTICATO R.

SPECIFICATION forming part of Letters Patent No. 277,998, dated May 22, 1883.

Application filed February 26, 1878.

city of Rochester, county of Monroe, and State,-

of New York, have invented a certain new and useful Improvement in Grain-Decorticators;

and I do hereby declare that the following is a full, clear, and exact description of the construction and operation ofthe same, reference being bad to the accompanying drawings, in

Figure 1 is a central vertical section of the machine. Figs. 2 and 3 are detail views. Fig.

4 is across-section in line as mof Fig. 1. Figs. 5, 6, 7, and'8 are detail views.

My improvement relates tograin-decorticators in which a stone casing is employed and brushes and heaters are used for agitating the grain. V

The invention consists in the construction" and arrangement of parts, hereinafter more fully describedand claimed.

A represents the frame. B B B are sections 7 of stone, and B B B are air-sections composing the casing or curb. These sections are preferably set alternately as shown, but may be arranged difierently 'or in unequal numbers, if desired. ,When set up these sections form a cylinder. The air-sections B B are hollow longitudinally, and are finely perforated on their inner peripheries, are open at the tops,

and at the bottoms have openings on a, communicating with the outside air.

D is the fan-case at the top of the machine,

provided with the usual spout, I). E is a suction-fan resting in the case. The open ends of the air-sections B B open into this case,

as shown at the left in Fig. 1 but the interior .of the curb is cut off from the fan case by the bottom of the fan-case. By this arrangement it will be seen that the outside air will be drawn in through the openings on and up through the air-sections, and the, dust which is beaten through the perforations on the innor periphery of the air-sections will be drawn 4 5 upward into the fan-case and discharged. In

7 addition to this function of the air-sections,

they serve the purpose of breaking the continuity of the stone case, and, by presenting a smooth surface, turn the grain so that it is subjected to a new action on every quarter,

cleanin g off the particles of cuticle and allowing them to pass off into the draft.

K is the spindle. l

G is a receiving-chamber beneath the fancase.

H is a spout or hopper for feeding the grain into the machine. h

I I are disks or heads attached fast to the spindle at the top and bottom of the machine. These disks receive and hold the brushes and 6c theaters.

L L are the heaters, and M M the brushes. Their upper and lower ends rest loosely between guides or lugs ff, Fig. 8, of the disks I I, by which means they can be adjusted out and in radially without being displaced, and yet can revolve freely with the spindle. The heaters consist of thin plates of metal set ed gewise to the case, and the brushes are made wide to fill the whole space between the beaters leaving only sufficient room for the proper adjustment out and in. By this means a whole cylinder is formed by the brushes and heaters, which leaves an annular space between the same and the exterior case or curb, through 5 which the grain must pass and in which it is confined in its passage downward, thereby holding it closer to the scouring-case, by which it receives better action, also preventing it from being-dashed through the cylinder and becoming broken.

N N are'the spiders by which the heaters and the brushes are connected with the spindle. These spiders have hubs g g, which slide free upon the spindle, and radial arms at m, 8 with forked ends a n, which embrace thin flanges k k on the backs of the heaters and brushes. In these flanges are made inclined slots (1 q, those of the brushes being twice or more the inclination of those of the heaters, 0 as shown in Figs. 6 and 7. Pins pp pass through the ends of the arms and these slots, and as the arms are raised or depressed it will be seen that the brushes and heaters will be correspondingly thrown out or in. Owing to the greater inclination, of the slots in the brushes, the brushes will receive twice or more the movement of the heaters in adjusting, which is necessary to compensate for the greater wear of the brushes. I00

h h are tie-rods which connect the two spiders, by which'both move together in adjusting up or down.

The adjustment of the brushes and beaters may be secured by any desired means. That shown in the drawings is a rod, P, which extends down through a tube formed in the up per end of the spindle, said rod having a loop, a", at its lower end, through which and the hub of the upper spider passes a key, .9, as shown in Fig. 2. A slot, t, is formed in I the spindle to allow the key to rise and fall. The rod P is operated at the upper end by a nut, S, I disclaim the invention of this means for operating the spiders.

F is an air-trunk opening into the top of the fan-case and extending to the bottom of the machine, where it receives the discharge-spout c, which discharges the grain from the interior. By means of this air-trunk such dust as passes out with the grain is drawn up into the fancase.

What I claim herein as new is- 1. In a grain-cleaning machine, the combination of the heaters and brushes provided with the flanges k on their backs, having the inclined slots q, with the arms m, provided with the ends 12, and pins p, passing through the inclined slots, whereby when the arms are raised or lowered the heaters and brushes will be moved in and out, as herein shown and described.

2. The combination, with the beaters L and brushes M, having the flanges 70, provided with slots q of unequal inclination, of the spiders N, having the pins 19 attached to the arms thereof and passing through said slots,

whereby the beaters and brushes have unequal adjustment when the spiders are moved up and down, as herein shown and described.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

SILAS DODSON.

WVitnesses:

W. L. PALMER, R. F. Oseoon. 

